Portable power attachment for slicing machines



Nov. 22, 1927.

H. GOLDSTEIN PORTABLE POWER ATTACHMENT FOR smcme MACHINES Filed 00% 28,1925 IIIIIIILIII 10 T jab WITNESS:

Fill

Patented Nov. 22, 1927. f

UNITED STATES HERMAN GOLDSTEIN, OF PHILADELPHIA, PENNSYLVANIA.

PORTABLE IPOWER- ATTACHMENT FOR SLICING MACHINES.

Application filed Gctober 22, 1825.

This invention relates to slicing machines, and more particularly to a.portable attaching medium for converting a hand operated slicing machineinto a power driven machine. The object of the present invention is toprovide a manually operated slicing machine with a belt-driven powerattachment which embodies in combination idler means for controlling thefrictional engagement of the belt, braking means for the prime mover,and an automatic switch control.

Another object of the invention is to pro vide an attachment asspecified, which is adapted to be .controlled by a foot pedal therebyleaving both hands of the operator free to handle the article to be cut.

Other objects of the invention will appear the accompanying drawingswherein:

Figure 1-is a side elevational view of the device showing it attached tothe hand wheel of a slicing machine, with the automatic switch structurepartly in section.

Figure 2is a view in elevation of the reverse side showing the brakemechanism and the supporting platform partly in section.

Figure 8is a detailed top plan of the device showing the motor in dottedlines.

Referring more particularly to the drawing, the portable powerattachment for slicing machines comprises a rectangular supporting stand10 which is made up of a plurality of square legs 11, said legs beingheld together by means of a plurality of side or connecting members 12.Hingedly connected and adjacentjo, the upper ends of the two rear legs13, is a carrying plat form 14 which ext-ends beyond the supportingstand as indicated at 15, and is supported in a yieldable manner by apair of coiled springs 16 which are positioned upon the two front legs17 and adapted to urge upwardly against the underside of the carryingplatform 14 which has secured thereon, a prime mover in the form of anelectric motor 18, which is adapted to transmit power to the hand wheel19 of a slicing machine (not shown) by means of a belt 20 and the pulley21. Said belt is of greater length than the distancebetween the centersof the hand wheel shaft and the motor shaft, giv- Serial No. 65,456.

16, and an idler 22 which is supported by a vertical arm 23, said armbeing fastened to one of the front legs 17 of'the supporting stand 10,and has a clevis 25 formed at its upper end to receive the idlercarrying arm 26, which is pivoted in said clevis 25 intermediate itsends 27 and 28. The latter end has pivotally attached thereto, a hingedlink 29 which extends downwardly and is pivotally connected to one sideof the foot pedal 31. Said pedal being hingedly disposed on a laterallyextending member 32 which is secured to the bottom end 33 of one of thefront legs 17, and adapted upon applying pressure to the pedal 31, todraw the motor carrying platform 14 downwardly against the springs 16,thereby lowering the motor and giving a more taut effect to the belt 20.Connected. to the end 15 of the carrying platform 14 is a rod 30. whichin turn is pivotally'connected to the free end 35 of the foot pedal 31,so as to draw the carrying platform 14 downwardly when the pedal isdepressed. as just previously stated.

Simultaneously with this movement, the braking mechanism generallyshown, is released from contact with the belt portion passing around thepulley 21, said braking mechanism comprising a lever '37 which ispivoted to the free end 35 of the foot pedal 31, and extends inwardly toa point centrallv between one of the front supporting legs 17 and one ofthe rear legs 13. the other end of the lever 37, being secured to oneend of a rocking stud. 38 which, is mounted in a bracket 41. Saidbracket is disposed and secured to the cross members 12. The other endof the stud has fixedl secured thereon. acrank bar 43 which has hingodly connected thereto, 'an upwardly extending rod 44. Said rod ispivoted, as at 45. to and controlling lazy tongs 46 which have securedthereto. the brake shoes 47 which normally contact on the outerperiphery of the belt where it engages the pulley 21. The said lazytongs 46 are supported by and pivoted as shown at 42 to a vertical. arm48. which has an elongated slot 49 near its upper end for movementtherein of the upper pivot carried by the rod 44. The arm 48, is securedto the sideof one of the side connecting members 12. A. retractilospring 50 is secured to and between the outer pivoted points 51 of thelazy tongs 426. for maintaining the nor and contact of the bralre'sl'1;? onthe if) eater periphery of the bel at a itltiii'iii where the beltengages around the pulley 21 after foot pressure on the pedal 31 hasbeen released.

Secured to the front of the supporting stand adjacent the upper ends ofthe legs 17, is a knife switch b 2; 52 housing a common type of knifeswitch 53, which is normally held in open position by a spring 541.Extending through said box is a rod which extends downwardly to and isalso pivoted to the foot pedal 31 and adapted to close the knife switch.53 by meansoof a cam block 56 which is secured to the upper end of theswitch box enclosed portion of the rod 55 when the :foot pedal 31 isforced downwardly. Similarly when the pressur on the foot pedal isreleased,-the rodeo will move upwardly and disengage the cam block 56from the knife switch bar, thereby permittingthe spring 5% to force theknife switchotit of circuit closing contact.

From-the foregoing, it will be readily apparent, that when the-portablepower device is attached to the hand wheel of a slicing machine, bymeans of a belt, amanually operated slicing is transformed into avariable speed power machine, which is controlled at all times, by asingle foot pedal, leaving the hands of theoperator free to handle thearticle to be sliced, as well as the slices, as they fall from thecircular knife of the ,machine.

It is, of course, to be understood, that'the invention may beconstructed in various other manners and the parts associated indifferent relations, and therefore, I do not desire to belimited in anymanner, except as set forth in the claims hereunto appended.

What I claim is 1. Ina drive mechanism for machines to be operated, thecombination with a frame having adriving apparatus including a drivingshaft mounted thereon, a driving member on said shaft and provided withan endless element driven thereby, the element adapted to engage withand operate a device to be driven, of a platform pivotally supported onthe frame and carrying said apparatus, yieldablyexpansible means foracting against the platform'to create looseness of play in the endlesselement, an oscillatory member provided with means to engage with saidendless element, and manually operated means with operative connectionsto the platform and the oscillatory member for ac tuati-ng themsimultaneously to regulate the looseness of play of said endlesselement.

2. In a drive mechanism for machines to be operated, the combinationwith a frame having a yieldably supported platform with a drivingapparatus mounted thereon, the driving apparatus including a drivingshaft and a drive membeiyof an endless element operated by the drivemember and adapted for connections with a machine to be driven,

the yieldably mounted platform acting to create looseness of play in theendless element, and manually operated means operatively connecting withthe platform for ad justing it against its yieldability, for regulatingthe looscness of play of the endless element.

3. In a drive mechanism for machines to be operated, the combinationwith a frame having a driving apparatus including a driving shaftmounted thereon, a driving membervon said shaft and provided with anendless element driven thereby, the element adapted to engage with andoperate a device to be driven, of a platform pivotally supported on theframe and carrying said apparatus, ,yieldablv enpansible means for acting against the platform to create looseness of play in the endlesselement, an oscillatory member provided with means to engage with saidendless element, manually operated means with operative connections tothe platform and the oscillatory member for actuating themsimultaneously to regulate the looseness of play of said endlesselement, and a brake mechanism cooperating with the driving member andbeing opera tively connected to and actuated by the man ual means forretarding the movement of the driving member.

4. In a drive mechanism for machines to be operated, the combinationwith a frame having a yieldably supported platform with a drivingapparatus mounted thereon, the driving apparatus including adrivingshaft and a-drive member, of an endless element operated by the drivemember and adapted for connections with a machine to bedriven, theyieldably mounted platform acting to create looseness of play in theendless element, manually operated moans operatively connecting with theplatform for adjusting it against its yieldabi'lity, for regulating thelooseness of play of the endless element, an oscillatory device withmeans to engage the endless element, and means operatively connectingsaid device and the manually operated means for simultaneous operationwith the tension or looseness of play of the endless element.

'5. In a drive mechanism for machines to be operated, the combinationwith .a frame havinga yieldably s ugported platform with a drivingappa'atus mounted thereon, the driving apparatus including a drivingshaft and a drive member, of an-endless element operated bythe drivememberand adapted for connections with a machine to be driven, theyieldably mounted platform acting to create looseness of play in theendless elevment, manually operated means op'eratively connecting withthe platform for adjusting it against its yieldability, for regulatingthe looseness of play of the endless element, an

the platform, to further assist in regulating platform, to furtherassist in regulating the In testimony whereof I afiix mysignaoscillatory device with means to engage the drivingmember and beingin turn 0peraendless element, means operatively connecttively connectedto and operated by the ing said device and the manually operated manualmeans for retarding the action of 10 means for simultaneous operationwith the the driving member.

tension or looseness of play of the endless tui'e. V element, and abrake cooperating with the V HERMAN GOLDSTEIN.

